📅 Original date posted:2019-03-21
📝 Original message:I'm not really sure the problem you're describing, but it sounds like something that affects normal bitcoin transactions as well.
There's certainly some interesting about the idea of "pre-fragmenting" your wallet utxo so you can make (or in payjoin: receive) payments with better privacy aspects.However, it's pretty unlikely to be practical for normal users, as it'll generally result in pretty big and cost-ineffective transactions.
In general though, there's like a 1000 different things you can do with coin selection, utxo management (and payjoin contributed input selection) but more often than not you are just making just making 1 trade off for another and good solutions will be wildly different depending on how you use your wallet.
-Ryan
‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Monday, March 18, 2019 3:55 AM, Kenshiro \[\] via bitcoin-dev <bitcoin-dev at lists.linuxfoundation.org> wrote:
> Hi,
>
> I think Payjoin can be a very good privacy solution for Bitcoin, but I have a question about it:
>
> - If a user has 1 BTC in a single address and make a payjoin payment to other person of 0.1 BTC using that address as input, the other person can see in a blockchain explorer the change address with an amount of 0.9 BTC. That's a serious privacy leak. I would like to know what will be the standard solution to this issue. An easy fix could be that the user wallet check if any address contains a BTC amount higher than a "safe" amount like 0.01 BTC or less. If some address exceed that amount the wallet could automatically make 1 payment to itself to split the amount in several addresses. In this way nobody receiving a payment from a user will ever know that he has a bitcoin balance higher than the "safe" amount.
>
> What do you think?
>
> Regards,
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rhavar at protonmail.com [ARCHIVE] /
npub1gl…l5ays
2023-06-07 20:17:09
in reply to nevent1q…n2w4
Author Public Key
npub1glk4wtcgyl40v0zr2sz4vsxg5c00zx3ffrf3amr362pgx3fcd39q8l5aysPublished at
2023-06-07 20:17:09Event JSON
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"content": "📅 Original date posted:2019-03-21\n📝 Original message:I'm not really sure the problem you're describing, but it sounds like something that affects normal bitcoin transactions as well.\n\nThere's certainly some interesting about the idea of \"pre-fragmenting\" your wallet utxo so you can make (or in payjoin: receive) payments with better privacy aspects.However, it's pretty unlikely to be practical for normal users, as it'll generally result in pretty big and cost-ineffective transactions.\n\nIn general though, there's like a 1000 different things you can do with coin selection, utxo management (and payjoin contributed input selection) but more often than not you are just making just making 1 trade off for another and good solutions will be wildly different depending on how you use your wallet.\n\n-Ryan\n\n‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐\nOn Monday, March 18, 2019 3:55 AM, Kenshiro \\[\\] via bitcoin-dev \u003cbitcoin-dev at lists.linuxfoundation.org\u003e wrote:\n\n\u003e Hi,\n\u003e\n\u003e I think Payjoin can be a very good privacy solution for Bitcoin, but I have a question about it:\n\u003e\n\u003e - If a user has 1 BTC in a single address and make a payjoin payment to other person of 0.1 BTC using that address as input, the other person can see in a blockchain explorer the change address with an amount of 0.9 BTC. That's a serious privacy leak. I would like to know what will be the standard solution to this issue. An easy fix could be that the user wallet check if any address contains a BTC amount higher than a \"safe\" amount like 0.01 BTC or less. If some address exceed that amount the wallet could automatically make 1 payment to itself to split the amount in several addresses. In this way nobody receiving a payment from a user will ever know that he has a bitcoin balance higher than the \"safe\" amount.\n\u003e\n\u003e What do you think?\n\u003e\n\u003e Regards,\n-------------- next part --------------\nAn HTML attachment was scrubbed...\nURL: \u003chttp://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20190321/a8697048/attachment-0001.html\u003e",
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